Application of in line flocculation - ultra (micro) filtration | |
| Author | Hwang, Chyi-liang |
| Call Number | AIT Thesis no. EV-89-5 |
| Subject(s) | Sewage--Purification--Flocculation Sewage--Purification--Filtration |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A laboratory-scale experimental study on in- line flocculation membrane filtration was reported in this thesis. This study was focused on the principles and advantages of in-line flocculation in crossflow microfiltration (CFMF) and its applications. (i ) Kaolin clay suspension of known concentration was used with alum to study the principles and advantages of in-line flocculation with CFMF. These experiments l ed to the conclusion that the residence time of flocculant played an insignificant role in this study; determination of optimum dose of flocculant and crossflow velocity were essential for optimum performance. (ii) An in- line flocculation arrangement with alum , FeCla and powered activated carbon (PAC ) to treat the AIT sewage was studied. The results supported the advantages of in-line CFMF when the optimum operation parameters were chosen. The sludge production in dead-end filtration and deposit on membrane of CFMF due to flocculent usage was also estimated . (iii) Pulp and paper mill black liquor flocculated with alum, FeCla, and lime was filtered using polysulfone membrane with molecular cutoff size 10,000 (UF-lOps) . Application in black liquor treatment indicated that the permeate flux increase was insignificant when flocculant was used. Also no apparent improvement in permeate quality was observed. |
| Year | 1989 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Vigneswaran, Saravanamuthu |
| Examination Committee(s) | Yamamoto, K. ;Ahn, Kyu-Hong |
| Scholarship Donor(s) | The Government of Republic of China |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |